/*
 * Copyright (C)2011-2015 D. R. Commander.  All Rights Reserved.
 * Copyright (C)2015 Viktor Szathmáry.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of the libjpeg-turbo Project nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package org.libjpegturbo.turbojpeg;

import java.io.Closeable;
import java.nio.ByteOrder;

/**
 * TurboJPEG compressor
 */
public class TJCompressor implements Closeable {

    private static final String NO_ASSOC_ERROR =
            "No source image is associated with this instance";

    /**
     * Create a TurboJPEG compressor instance.
     */
    public TJCompressor() throws TJException {
        init();
    }

    /**
     * Create a TurboJPEG compressor instance and associate the uncompressed
     * source image stored in <code>srcImage</code> with the newly created
     * instance.
     *
     * @param srcImage    see {@link #setSourceImage} for description
     * @param x           see {@link #setSourceImage} for description
     * @param y           see {@link #setSourceImage} for description
     * @param width       see {@link #setSourceImage} for description
     * @param pitch       see {@link #setSourceImage} for description
     * @param height      see {@link #setSourceImage} for description
     * @param pixelFormat pixel format of the source image (one of
     *                    {@link TJ#PF_RGB TJ.PF_*})
     */
    public TJCompressor(byte[] srcImage, int x, int y, int width, int pitch,
                        int height, int pixelFormat) throws TJException {
        setSourceImage(srcImage, x, y, width, pitch, height, pixelFormat);
    }

    /**
     * @deprecated Use
     * {@link #TJCompressor(byte[], int, int, int, int, int, int)} instead.
     */
    @Deprecated
    public TJCompressor(byte[] srcImage, int width, int pitch, int height,
                        int pixelFormat) throws TJException {
        setSourceImage(srcImage, width, pitch, height, pixelFormat);
    }

    /**
     * Create a TurboJPEG compressor instance and associate the uncompressed
     * source image stored in <code>srcImage</code> with the newly created
     * instance.
     *
     * @param srcImage see
     *                 {@link #setSourceImage(BufferedImage, int, int, int, int)} for description
     * @param x        see
     *                 {@link #setSourceImage(BufferedImage, int, int, int, int)} for description
     * @param y        see
     *                 {@link #setSourceImage(BufferedImage, int, int, int, int)} for description
     * @param width    see
     *                 {@link #setSourceImage(BufferedImage, int, int, int, int)} for description
     * @param height   see
     *                 {@link #setSourceImage(BufferedImage, int, int, int, int)} for description
     */
//    public TJCompressor(BufferedImage srcImage, int x, int y, int width,
//                        int height) throws TJException {
//        setSourceImage(srcImage, x, y, width, height);
//    }

    /**
     * Associate an uncompressed RGB, grayscale, or CMYK source image with this
     * compressor instance.
     *
     * @param srcImage    image buffer containing RGB, grayscale, or CMYK pixels to
     *                    be compressed or encoded.  This buffer is not modified.
     * @param x           x offset (in pixels) of the region in the source image from which
     *                    the JPEG or YUV image should be compressed/encoded
     * @param y           y offset (in pixels) of the region in the source image from which
     *                    the JPEG or YUV image should be compressed/encoded
     * @param width       width (in pixels) of the region in the source image from
     *                    which the JPEG or YUV image should be compressed/encoded
     * @param pitch       bytes per line of the source image.  Normally, this should be
     *                    <code>width * TJ.pixelSize(pixelFormat)</code> if the source image is
     *                    unpadded, but you can use this parameter to, for instance, specify that
     *                    the scanlines in the source image are padded to a 4-byte boundary or to
     *                    compress/encode a JPEG or YUV image from a region of a larger source
     *                    image.  You can also be clever and use this parameter to skip lines, etc.
     *                    Setting this parameter to 0 is the equivalent of setting it to
     *                    <code>width * TJ.pixelSize(pixelFormat)</code>.
     * @param height      height (in pixels) of the region in the source image from
     *                    which the JPEG or YUV image should be compressed/encoded
     * @param pixelFormat pixel format of the source image (one of
     *                    {@link TJ#PF_RGB TJ.PF_*})
     */
    public void setSourceImage(byte[] srcImage, int x, int y, int width,
                               int pitch, int height, int pixelFormat)
            throws TJException {
        if (handle == 0) init();
        if (srcImage == null || x < 0 || y < 0 || width < 1 || height < 1 ||
                pitch < 0 || pixelFormat < 0 || pixelFormat >= TJ.NUMPF)
            throw new IllegalArgumentException("Invalid argument in setSourceImage()");
        srcBuf = srcImage;
        srcWidth = width;
        if (pitch == 0)
            srcPitch = width * TJ.getPixelSize(pixelFormat);
        else
            srcPitch = pitch;
        srcHeight = height;
        srcPixelFormat = pixelFormat;
        srcX = x;
        srcY = y;
        srcBufInt = null;
        srcYUVImage = null;
    }

    /**
     * @deprecated Use
     * {@link #setSourceImage(byte[], int, int, int, int, int, int)} instead.
     */
    @Deprecated
    public void setSourceImage(byte[] srcImage, int width, int pitch,
                               int height, int pixelFormat) throws TJException {
        setSourceImage(srcImage, 0, 0, width, pitch, height, pixelFormat);
        srcX = srcY = -1;
    }

    /**
     * Associate an uncompressed RGB or grayscale source image with this
     * compressor instance.
     *
     * @param srcImage a <code>BufferedImage</code> instance containing RGB or
     *                 grayscale pixels to be compressed or encoded.  This image is not modified.
     * @param x        x offset (in pixels) of the region in the source image from which
     *                 the JPEG or YUV image should be compressed/encoded
     * @param y        y offset (in pixels) of the region in the source image from which
     *                 the JPEG or YUV image should be compressed/encoded
     * @param width    width (in pixels) of the region in the source image from
     *                 which the JPEG or YUV image should be compressed/encoded (0 = use the
     *                 width of the source image)
     * @param height   height (in pixels) of the region in the source image from
     *                 which the JPEG or YUV image should be compressed/encoded (0 = use the
     *                 height of the source image)
     */
//    public void setSourceImage(BufferedImage srcImage, int x, int y, int width,
//                               int height) throws TJException {
//        if (handle == 0) init();
//        if (srcImage == null || x < 0 || y < 0 || width < 0 || height < 0)
//            throw new IllegalArgumentException("Invalid argument in setSourceImage()");
//        srcX = x;
//        srcY = y;
//        srcWidth = (width == 0) ? srcImage.getWidth() : width;
//        srcHeight = (height == 0) ? srcImage.getHeight() : height;
//        if (x + width > srcImage.getWidth() || y + height > srcImage.getHeight())
//            throw new IllegalArgumentException("Compression region exceeds the bounds of the source image");
//
//        int pixelFormat;
//        boolean intPixels = false;
//        if (byteOrder == null)
//            byteOrder = ByteOrder.nativeOrder();
//        switch (srcImage.getType()) {
//            case BufferedImage.TYPE_3BYTE_BGR:
//                pixelFormat = TJ.PF_BGR;
//                break;
//            case BufferedImage.TYPE_4BYTE_ABGR:
//            case BufferedImage.TYPE_4BYTE_ABGR_PRE:
//                pixelFormat = TJ.PF_XBGR;
//                break;
//            case BufferedImage.TYPE_BYTE_GRAY:
//                pixelFormat = TJ.PF_GRAY;
//                break;
//            case BufferedImage.TYPE_INT_BGR:
//                if (byteOrder == ByteOrder.BIG_ENDIAN)
//                    pixelFormat = TJ.PF_XBGR;
//                else
//                    pixelFormat = TJ.PF_RGBX;
//                intPixels = true;
//                break;
//            case BufferedImage.TYPE_INT_RGB:
//            case BufferedImage.TYPE_INT_ARGB:
//            case BufferedImage.TYPE_INT_ARGB_PRE:
//                if (byteOrder == ByteOrder.BIG_ENDIAN)
//                    pixelFormat = TJ.PF_XRGB;
//                else
//                    pixelFormat = TJ.PF_BGRX;
//                intPixels = true;
//                break;
//            default:
//                throw new IllegalArgumentException("Unsupported BufferedImage format");
//        }
//        srcPixelFormat = pixelFormat;
//
//        WritableRaster wr = srcImage.getRaster();
//        if (intPixels) {
//            SinglePixelPackedSampleModel sm =
//                    (SinglePixelPackedSampleModel) srcImage.getSampleModel();
//            srcStride = sm.getScanlineStride();
//            DataBufferInt db = (DataBufferInt) wr.getDataBuffer();
//            srcBufInt = db.getData();
//            srcBuf = null;
//        } else {
//            ComponentSampleModel sm =
//                    (ComponentSampleModel) srcImage.getSampleModel();
//            int pixelSize = sm.getPixelStride();
//            if (pixelSize != TJ.getPixelSize(pixelFormat))
//                throw new IllegalArgumentException("Inconsistency between pixel format and pixel size in BufferedImage");
//            srcPitch = sm.getScanlineStride();
//            DataBufferByte db = (DataBufferByte) wr.getDataBuffer();
//            srcBuf = db.getData();
//            srcBufInt = null;
//        }
//        srcYUVImage = null;
//    }

    /**
     * Associate an uncompressed YUV planar source image with this compressor
     * instance.
     *
     * @param srcImage YUV planar image to be compressed.  This image is not
     *                 modified.
     */
    public void setSourceImage(YUVImage srcImage) throws TJException {
        if (handle == 0) init();
        if (srcImage == null)
            throw new IllegalArgumentException("Invalid argument in setSourceImage()");
        srcYUVImage = srcImage;
        srcBuf = null;
        srcBufInt = null;
    }

    /**
     * Set the level of chrominance subsampling for subsequent compress/encode
     * operations.  When pixels are converted from RGB to YCbCr (see
     * {@link TJ#CS_YCbCr}) or from CMYK to YCCK (see {@link TJ#CS_YCCK}) as part
     * of the JPEG compression process, some of the Cb and Cr (chrominance)
     * components can be discarded or averaged together to produce a smaller
     * image with little perceptible loss of image clarity (the human eye is more
     * sensitive to small changes in brightness than to small changes in color.)
     * This is called "chrominance subsampling".
     * <p>
     * NOTE: This method has no effect when compressing a JPEG image from a YUV
     * planar source.  In that case, the level of chrominance subsampling in
     * the JPEG image is determined by the source.  Further, this method has no
     * effect when encoding to a pre-allocated {@link YUVImage} instance.  In
     * that case, the level of chrominance subsampling is determined by the
     * destination.
     *
     * @param newSubsamp the level of chrominance subsampling to use in
     *                   subsequent compress/encode oeprations (one of
     *                   {@link TJ#SAMP_444 TJ.SAMP_*})
     */
    public void setSubsamp(int newSubsamp) {
        if (newSubsamp < 0 || newSubsamp >= TJ.NUMSAMP)
            throw new IllegalArgumentException("Invalid argument in setSubsamp()");
        subsamp = newSubsamp;
    }

    /**
     * Set the JPEG image quality level for subsequent compress operations.
     *
     * @param quality the new JPEG image quality level (1 to 100, 1 = worst,
     *                100 = best)
     */
    public void setJPEGQuality(int quality) {
        if (quality < 1 || quality > 100)
            throw new IllegalArgumentException("Invalid argument in setJPEGQuality()");
        jpegQuality = quality;
    }

    /**
     * Compress the uncompressed source image associated with this compressor
     * instance and output a JPEG image to the given destination buffer.
     *
     * @param dstBuf buffer that will receive the JPEG image.  Use
     *               {@link TJ#bufSize} to determine the maximum size for this buffer based on
     *               the source image's width and height and the desired level of chrominance
     *               subsampling.
     * @param flags  the bitwise OR of one or more of
     *               {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
     */
    public void compress(byte[] dstBuf, int flags) throws TJException {
        if (dstBuf == null || flags < 0)
            throw new IllegalArgumentException("Invalid argument in compress()");
        if (srcBuf == null && srcBufInt == null && srcYUVImage == null)
            throw new IllegalStateException(NO_ASSOC_ERROR);
        if (jpegQuality < 0)
            throw new IllegalStateException("JPEG Quality not set");
        if (subsamp < 0 && srcYUVImage == null)
            throw new IllegalStateException("Subsampling level not set");

        if (srcYUVImage != null)
            compressedSize = compressFromYUV(srcYUVImage.getPlanes(),
                    srcYUVImage.getOffsets(),
                    srcYUVImage.getWidth(),
                    srcYUVImage.getStrides(),
                    srcYUVImage.getHeight(),
                    srcYUVImage.getSubsamp(),
                    dstBuf, jpegQuality, flags);
        else if (srcBuf != null) {
            if (srcX >= 0 && srcY >= 0)
                compressedSize = compress(srcBuf, srcX, srcY, srcWidth, srcPitch,
                        srcHeight, srcPixelFormat, dstBuf, subsamp,
                        jpegQuality, flags);
            else
                compressedSize = compress(srcBuf, srcWidth, srcPitch, srcHeight,
                        srcPixelFormat, dstBuf, subsamp, jpegQuality,
                        flags);
        } else if (srcBufInt != null) {
            if (srcX >= 0 && srcY >= 0)
                compressedSize = compress(srcBufInt, srcX, srcY, srcWidth, srcStride,
                        srcHeight, srcPixelFormat, dstBuf, subsamp,
                        jpegQuality, flags);
            else
                compressedSize = compress(srcBufInt, srcWidth, srcStride, srcHeight,
                        srcPixelFormat, dstBuf, subsamp, jpegQuality,
                        flags);
        }
    }

    /**
     * Compress the uncompressed source image associated with this compressor
     * instance and return a buffer containing a JPEG image.
     *
     * @param flags the bitwise OR of one or more of
     *              {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
     * @return a buffer containing a JPEG image.  The length of this buffer will
     * not be equal to the size of the JPEG image.  Use {@link
     * #getCompressedSize} to obtain the size of the JPEG image.
     */
    public byte[] compress(int flags) throws TJException {
        checkSourceImage();
        byte[] buf = new byte[TJ.bufSize(srcWidth, srcHeight, subsamp)];
        compress(buf, flags);
        return buf;
    }

    /**
     * @deprecated Use
     * {@link #setSourceImage(BufferedImage, int, int, int, int)} and
     * {@link #compress(byte[], int)} instead.
     */
//    @Deprecated
//    public void compress(BufferedImage srcImage, byte[] dstBuf, int flags)
//            throws TJException {
//        setSourceImage(srcImage, 0, 0, 0, 0);
//        compress(dstBuf, flags);
//    }

    /**
     * @deprecated Use
     * {@link #setSourceImage(BufferedImage, int, int, int, int)} and
     * {@link #compress(int)} instead.
     */
//    @Deprecated
//    public byte[] compress(BufferedImage srcImage, int flags)
//            throws TJException {
//        setSourceImage(srcImage, 0, 0, 0, 0);
//        return compress(flags);
//    }

    /**
     * Encode the uncompressed source image associated with this compressor
     * instance into a YUV planar image and store it in the given
     * <code>YUVImage</code> instance.   This method uses the accelerated color
     * conversion routines in TurboJPEG's underlying codec but does not execute
     * any of the other steps in the JPEG compression process.  Encoding
     * CMYK source images to YUV is not supported.
     *
     * @param dstImage {@link YUVImage} instance that will receive the YUV planar
     *                 image
     * @param flags    the bitwise OR of one or more of
     *                 {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
     */
    public void encodeYUV(YUVImage dstImage, int flags) throws TJException {
        if (dstImage == null || flags < 0)
            throw new IllegalArgumentException("Invalid argument in encodeYUV()");
        if (srcBuf == null && srcBufInt == null)
            throw new IllegalStateException(NO_ASSOC_ERROR);
        if (srcYUVImage != null)
            throw new IllegalStateException("Source image is not correct type");
        checkSubsampling();
        if (srcWidth != dstImage.getWidth() || srcHeight != dstImage.getHeight())
            throw new IllegalStateException("Destination image is the wrong size");

        if (srcBufInt != null) {
            encodeYUV(srcBufInt, srcX, srcY, srcWidth, srcStride, srcHeight,
                    srcPixelFormat, dstImage.getPlanes(), dstImage.getOffsets(),
                    dstImage.getStrides(), dstImage.getSubsamp(), flags);
        } else {
            encodeYUV(srcBuf, srcX, srcY, srcWidth, srcPitch, srcHeight,
                    srcPixelFormat, dstImage.getPlanes(), dstImage.getOffsets(),
                    dstImage.getStrides(), dstImage.getSubsamp(), flags);
        }
        compressedSize = 0;
    }

    /**
     * @deprecated Use {@link #encodeYUV(YUVImage, int)} instead.
     */
    @Deprecated
    public void encodeYUV(byte[] dstBuf, int flags) throws TJException {
        if (dstBuf == null)
            throw new IllegalArgumentException("Invalid argument in encodeYUV()");
        checkSourceImage();
        checkSubsampling();
        YUVImage yuvImage = new YUVImage(dstBuf, srcWidth, 4, srcHeight, subsamp);
        encodeYUV(yuvImage, flags);
    }

    /**
     * Encode the uncompressed source image associated with this compressor
     * instance into a unified YUV planar image buffer and return a
     * <code>YUVImage</code> instance containing the encoded image.  This method
     * uses the accelerated color conversion routines in TurboJPEG's underlying
     * codec but does not execute any of the other steps in the JPEG compression
     * process.  Encoding CMYK source images to YUV is not supported.
     *
     * @param pad   the width of each line in each plane of the YUV image will be
     *              padded to the nearest multiple of this number of bytes (must be a power of
     *              2.)
     * @param flags the bitwise OR of one or more of
     *              {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
     * @return a YUV planar image.
     */
    public YUVImage encodeYUV(int pad, int flags) throws TJException {
        checkSourceImage();
        checkSubsampling();
        if (pad < 1 || ((pad & (pad - 1)) != 0))
            throw new IllegalStateException("Invalid argument in encodeYUV()");
        YUVImage yuvImage = new YUVImage(srcWidth, pad, srcHeight, subsamp);
        encodeYUV(yuvImage, flags);
        return yuvImage;
    }

    /**
     * Encode the uncompressed source image associated with this compressor
     * instance into separate Y, U (Cb), and V (Cr) image planes and return a
     * <code>YUVImage</code> instance containing the encoded image planes.  This
     * method uses the accelerated color conversion routines in TurboJPEG's
     * underlying codec but does not execute any of the other steps in the JPEG
     * compression process.  Encoding CMYK source images to YUV is not supported.
     *
     * @param strides an array of integers, each specifying the number of bytes
     *                per line in the corresponding plane of the output image.  Setting the
     *                stride for any plane to 0 is the same as setting it to the component width
     *                of the plane.  If <code>strides</code> is null, then the strides for all
     *                planes will be set to their respective component widths.  You can adjust
     *                the strides in order to add an arbitrary amount of line padding to each
     *                plane.
     * @param flags   the bitwise OR of one or more of
     *                {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
     * @return a YUV planar image.
     */
    public YUVImage encodeYUV(int[] strides, int flags) throws TJException {
        checkSourceImage();
        checkSubsampling();
        YUVImage yuvImage = new YUVImage(srcWidth, strides, srcHeight, subsamp);
        encodeYUV(yuvImage, flags);
        return yuvImage;
    }

    /**
     * @deprecated Use {@link #encodeYUV(int, int)} instead.
     */
    @Deprecated
    public byte[] encodeYUV(int flags) throws TJException {
        checkSourceImage();
        checkSubsampling();
        YUVImage yuvImage = new YUVImage(srcWidth, 4, srcHeight, subsamp);
        encodeYUV(yuvImage, flags);
        return yuvImage.getBuf();
    }

    /**
     * @deprecated Use
     * {@link #setSourceImage(BufferedImage, int, int, int, int)} and
     * {@link #encodeYUV(byte[], int)} instead.
     */
//    @Deprecated
//    public void encodeYUV(BufferedImage srcImage, byte[] dstBuf, int flags)
//            throws TJException {
//        setSourceImage(srcImage, 0, 0, 0, 0);
//        encodeYUV(dstBuf, flags);
//    }

    /**
     * @deprecated Use
     * {@link #setSourceImage(BufferedImage, int, int, int, int)} and
     * {@link #encodeYUV(int, int)} instead.
     */
//    @Deprecated
//    public byte[] encodeYUV(BufferedImage srcImage, int flags)
//            throws TJException {
//        setSourceImage(srcImage, 0, 0, 0, 0);
//        return encodeYUV(flags);
//    }

    /**
     * Returns the size of the image (in bytes) generated by the most recent
     * compress operation.
     *
     * @return the size of the image (in bytes) generated by the most recent
     * compress operation.
     */
    public int getCompressedSize() {
        return compressedSize;
    }

    /**
     * Free the native structures associated with this compressor instance.
     */
    @Override
    public void close() throws TJException {
        if (handle != 0)
            destroy();
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            close();
        } catch (TJException e) {
        } finally {
            super.finalize();
        }
    }

    private native void init() throws TJException;

    private native void destroy() throws TJException;

    // JPEG size in bytes is returned
    @Deprecated
    private native int compress(byte[] srcBuf, int width, int pitch,
                                int height, int pixelFormat, byte[] dstBuf, int jpegSubsamp, int jpegQual,
                                int flags) throws TJException;

    private native int compress(byte[] srcBuf, int x, int y, int width,
                                int pitch, int height, int pixelFormat, byte[] dstBuf, int jpegSubsamp,
                                int jpegQual, int flags) throws TJException;

    @Deprecated
    private native int compress(int[] srcBuf, int width, int stride,
                                int height, int pixelFormat, byte[] dstBuf, int jpegSubsamp, int jpegQual,
                                int flags) throws TJException;

    private native int compress(int[] srcBuf, int x, int y, int width,
                                int stride, int height, int pixelFormat, byte[] dstBuf, int jpegSubsamp,
                                int jpegQual, int flags) throws TJException;

    private native int compressFromYUV(byte[][] srcPlanes, int[] srcOffsets,
                                       int width, int[] srcStrides, int height, int subsamp, byte[] dstBuf,
                                       int jpegQual, int flags)
            throws TJException;

    @Deprecated
    private native void encodeYUV(byte[] srcBuf, int width, int pitch,
                                  int height, int pixelFormat, byte[] dstBuf, int subsamp, int flags)
            throws TJException;

    private native void encodeYUV(byte[] srcBuf, int x, int y, int width,
                                  int pitch, int height, int pixelFormat, byte[][] dstPlanes,
                                  int[] dstOffsets, int[] dstStrides, int subsamp, int flags)
            throws TJException;

    @Deprecated
    private native void encodeYUV(int[] srcBuf, int width, int stride,
                                  int height, int pixelFormat, byte[] dstBuf, int subsamp, int flags)
            throws TJException;

    private native void encodeYUV(int[] srcBuf, int x, int y, int width,
                                  int srcStride, int height, int pixelFormat, byte[][] dstPlanes,
                                  int[] dstOffsets, int[] dstStrides, int subsamp, int flags)
            throws TJException;

    static {
        TJLoader.load();
    }

    private void checkSourceImage() {
        if (srcWidth < 1 || srcHeight < 1)
            throw new IllegalStateException(NO_ASSOC_ERROR);
    }

    private void checkSubsampling() {
        if (subsamp < 0)
            throw new IllegalStateException("Subsampling level not set");
    }

    private long handle = 0;
    private byte[] srcBuf = null;
    private int[] srcBufInt = null;
    private int srcWidth = 0;
    private int srcHeight = 0;
    private int srcX = -1;
    private int srcY = -1;
    private int srcPitch = 0;
    private int srcStride = 0;
    private int srcPixelFormat = -1;
    private YUVImage srcYUVImage = null;
    private int subsamp = -1;
    private int jpegQuality = -1;
    private int compressedSize = 0;
    private int yuvPad = 4;
    private ByteOrder byteOrder = null;
}
